Sectional heater



LJ UNGERS.

SECTIONAL HEATER.

APPLICATION FILED AUG-10,1917.

Patented Apr. 12, 1921.

2 SHEETS-SHEET 7.

W/TNESSES.

lNVENTO/Q TTom/Ley J. JUNGERS.

SECTIONAL HEATER.

APPLICATION FILED AUG-I0. 1917.

1,374,575. Pa ented Apr. 12, 1921.

2 SHEETS-SHEET 2. F1645. F109.

@ I {H 16 f PATENT orator;

VVJOHN JUNGEBS, or (marrow, Wisconsin.

SECTIONAL HEATER.

Specification of Letters Patent.

PatentedApr. 12, 1921.

Application filed. August 10, 1917. Serial No. 185,468.

I 0 all whom it may concern:

Be it known that I, JOHN J UNGERS, a citizen of the United States, and resident of Grafton, Ozaukee county, Wisconsin, have invented new and useful Improvements n SectionalHeaters, of which the following 1s a description, reference being had to the accompanying drawings, which are a part of this specification.

This invention has for its object to provide a sectional heater for domestic. heating purposes which will be more efficient because of increased area of exposed surface to the combustion chamber and the flues therefrom, and which will be more'flexible in its operation.

Another object of the invention is to provide such a sectional heater with a deep downwardly rflarin fuel, chamber which will permit of deep anking of fuel to maintain a low fire for a long period of tlme, thus permitting the furnace fire to be kept low and lighted and in condition to be forced at any time during a spell of mild weather.

Another object of this invention is to per fect details of construction in a furnace of this type.

With the above and other objects in view the invention consists in the sectional heater as herein claimed and all equivalents.

Referring to the accompanying drawings in which like characters of reference indlcate the same parts in the different views:

Figure lis a front view of a furnace constructed in accordance with this invention;

Fig. 2 is a transverse sectional View thereof Fig. 3 is a longitudinal sectional view of the heater through the fuel chamber on the plane of line 33 of Fig. 2, the damper being shown in the open position for dlrect draft connection;

Fig. 4 is a longitudinal sectional view thereof through one of thereturn draft lines on the plane of line 4+4 of F1g. 2, the damper beingshown in its closed poslt on for the'indirect draft connection;

.Fig. 5 isa sectional rear view through the smoke box on the plane of line 5-5 of Fig. 3 with the damper in its open position, full line arrows indicating the course of the direct draft to the smoke pipe opening and dotted line arrows indicating the course of the indirect draft;

Fig. 6 is a detail sectional view'on the plane of line 66 of Fig. 2, showing the manner of connecting the sections together;

Fig. 7 1s another detail View showing the manner of passing the tie rods through the furnace sections; v

Fig. 8 is a front view of a doubleheater constructed in accordance with this invention;

fFig. 9 is a transverse sectional View there- 0 I r Fig. 10 is an end'view of the grate showing the independent vertical movement of the grate bars; and, I

Fig. 11 is a plan view-of a portion thereof showing the independent horizontal movement of the grate bars.

In these drawings 15 indicates a'furnace base forming the ash pit, and of such a size as to accommodate the superstructure of as many sections as desired. The body of the furnace proper is made up of hollow sections; the front section 16 and rear'section 17 and intermediate sections 18. The: interme diate sections-areof uniform structure so that the furnace may be'enlarged or reduced at willby adding or removing them. When assembled the sections produce a central fuel chamber 19 which flares downwardly or increases in sectional area toward the lower end thereof. -OI1 either side of the fuel chamber 19 is an upper. flue 20 and the lower flue 21, the former having connectionwith the fuel chamber through the opening 22 in the rear section 17 and the lower flue 21-having communication with the upper flue 20 through an opening 23 in the front section 16 andhaving communication with a smoke box 24 on the back of the rear section through an opening 25 in the rear section. The walls surrounding the the chamber 19 and the fines are hollow to constitute a water jacket 26. o

The sections are held together by tie rods 27 passing through them with nuts threaded thereon. The tie rods preferably pass through the water jacket portions of the sections and desirably at the three points indicated in order that warping and expan sion may not interfere with the proper fit of the parts; The tie rods pass through the interfitting tapering couplings 28 and 29 formed on the sections which have a gasket; I

of asbestos or other suitable material therethe gases passing through the fines.

At the'top of the fuel chamber the intermediate sections 18 are provided with fins or projections 33 which further increase the area of surface exposed to the action of the heat.

The grate comprises a rod 34L which is preferably hexagonal in cross section between its bearing ends and has grate bars 35 mounted on it, the rod passing through similarly shaped but slightly larger openings in the grate bars so that the grate bars are free to rock and tilt thereon. The grate bars are, furthermore, held apart by spacers 36 between them which permit of the bars moving slightly in a horizontal plane to change their angularity with relation to each other in addition to the limitedloose movement on the rod in a vertical plane. This freedom of the grate bars to move scissors-like and to move farther apart at either end is to facilitate the passage of clinkers or other comparatively large hard bodies between them. The play is very limited and will not permit the fuel to run through, though it does facilitate the shaking operation by making the bars slightly independent.

As seen in Fig. 5, the two openings 25 from the lower fiues enter the smoke box 24 at the opposite lower corners thereof, while a direct draft opening 37 from the top of the fuel chamber 19 enters said smoke box at the middle of the upper portion thereof. The smoke pipe opening 38 is just beneath the opening 37, while a baffle plate 39extends from front to rear of the smoke box just beneath the smoke pipe opening 38.

A valve 40 is located in the smokerbox for closing the direct draft opening 37 and in the open position permits the smoke and gases to pass directly from the fuel chainher 19 through the direct draft opening 37 to the smoke pipe opening 38. When the valve is in closed position, however, the smoke and gases from the fuel chamber 19 pass out through openings 22 into the upper flues 20 to the front of the furnace, then down through openings 23 to the lower lines 21, thento the back of the furnace through openings 25 and smoke box 24 around baffle plate 39 to the smoke pipe opening 38. The direct draft connection thus imposes the least resistance to the flow of smoke and gases to the chimney, while the indirect draft connection requires it to travel through a circuitous path to which a maximum heating surface is exposed. The water jacket extends across the front and the rear of the furnace, the latter portion being heated from the smoke box as well as from the fuel chamber and the fines, while the front portion of the water jacket has openings therethrough to accommodate the fuel feed door 41, the grate cleaning door 42 and the flue cleanoutdoorsl3 The base is provided with the usual ash pit door at and draft door 45.

Communication from the water jacket of one section to the water jacket of the. next is made through the openings of the interfitting couplings 28 and 29 which are of larger diameter than the tie rod 27.

A heater constructed in accordance with this invention is very eflicient because of thelarge area of exposed surface and because of the deep downwardly flaring fuel 1 chamber which permits of economy in fuel at times when it is only desired to keep a low fire. The depth of thebed of fuel maintained by the usual practice of filling the fuel chamber level withthe feed opening or above, insures a gradual coking of the fuel under a light draft so that'the fire may burn for several days without any attention being given to the furnace while the furnace is checked. Whenever more heat j becomes necessary the fire will quickly respond to a change in draft and the 116063? city for rebuilding fires after short periods of inactivity is overcome.

The downward flaring side walls of the fuel chamber provide for an unobstructed passage for the settling of the fuel and the ashes while the grate construction is such as to assist in freeing itself from clinkers or the like by reason of the limited freedom of the grate parts.

It is obvious that various changes may be made in the construction of the furnace without departing from the invention. For instance the furnace may be made double as shown in Figs. ,8 and 9, wherein practically the same construction is followed, the exception being that a hollow partition 46 projects downwardly to divide the fuel chamber into two separate fuel chambers What I claim as new and desire to secure by Letters Patent is:

In a sectional water heater, the combination of hollow front, back and intermediate sections secured together to form a water jacket inclosing a narrow, deep central fuel chamber having a charging opening at its upper end, each of said sections having a water jacket space at their sides and top, the front section having a water jacket extending across the front thereof, the rear section having a water jacket extending across the rear thereof, upper and lower flues in the sides of each of the sections communicating at their forward ends through a passage in the front section, the upper flues communicating at their rear ends with the upper portion of the fuel chamber, a smoke, box

extending across the rear section and covering the rear side of the water jacket space of this section, said smoke box having a valve controlled passage communicating with the fuel chamber, openings in its sides communicating with the rear ends of the lower flues, and an intermediate discharge opening, below said discharge opening to direct the gases from the fines to the sides of said smoke box.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN J UNGERS.

Witnesses:

WM. F. SOHANEN, ELSIE WEYKER.

and a baffle plate in said smoke box 

